依据月份获得当月天数

根据月份获得当月天数

public static void main(String args[]) {String monthStr = "2";int month = Integer.parseInt(monthStr);Calendar cal = Calendar.getInstance();cal.set(Calendar.MONTH, month-1);cal.set(Calendar.DAY_OF_MONTH, 1);cal.set(Calendar.HOUR, 0);DecimalFormat format = new DecimalFormat();format.setMinimumIntegerDigits(2);format.setMaximumFractionDigits(0);format.setGroupingUsed(false);//System.out.println(cal.get(Calendar.MONTH));while (cal.get(Calendar.MONTH) == (month - 1)) {int day = cal.get(Calendar.DAY_OF_MONTH);cal.add(Calendar.DATE, 1);System.out.println(format.format(day));}}

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